Transport properties of the parent LaNiO2

TL;DR

This study investigates the transport properties of LaNiO2 using advanced theoretical methods, revealing a metallic ground state with ferromagnetic correlations, contrasting previous antiferromagnetic reports, supported by ARPES data.

Contribution

It provides new insights into the magnetic and electronic properties of LaNiO2, showing a stable metallic state with ferromagnetic correlations through combined DFT and DMFT analysis.

Findings

LaNiO2 exhibits a metallic ground state with ferromagnetic correlations.

The metallic behavior persists at high interaction energies.

ARPES data supports the metallic state of LaNiO2.

Abstract

Here we study the transport properties of a nickelate compound, namely LaNiO2 using density functional theory (DFT) in conjunction with dynamical mean field theory (DMFT). An interacting multi-orbital spin-resolved scenario for LaNiO2 yields a metallic ground state with ferromagnetic correlations. The latter contrasts an antiferromagnetic order reported earlier. The metallic behaviour persists even at large values of the interaction energies. Further support of the metallic state is provided by the angular resolved photoemission spectroscopy (ARPES) data.